El Futuro Perfecto

The Future Perfect expresses what will have happened by a certain time.
Formation: (Future tense of haber) + (past participle).
Past Participles: AR: -ado, ER/IR: -ido.
Other uses: 2. with dentro de + time (dentro de 5 años, habremos aprendido mucho sobre la genética. -> In 5 years, we will have learned a lot about genetics).
3. to speculate about something that may have happened in the past. (Laura no me llamó. ¿Qué le habrá pasado? Se habrá enterado de que no ibas. -> Laura didn't call me. Wha…